I have a MBA 13" mid 12, OS X 10.7.5. It often completely ignores my Wi-Fi network, not showing it in the list of available networks (my Linux boxes and Android devices are connecting perfectly).
I ...

I purchased a TL-WN823N wifi USB dongle because the airport cart of the old mac won't connect to new TimeCapsule router (I think the old drivers don't know WPA2, only WEP). So a suggestion I got was ...

The objective is to strengthen the WiFi reception (at the moment without additional hardware).
I live in an area with a 100+ radio signals.
Majority is useless (to low signal) but still scanned and ...

In my room I can only connect one device to the wifi router. In order to connect all my devices, I thought of connecting my macbook air to the router, then have a USB dongle connected to the macbook ...